Ribbed pipe coupling segment



FIG. 1 is an isometric view of our design for a ribbed pipe coupling segment;

FIG. 2 is a front view of the design for a ribbed pipe coupling segment shown in FIG. 1, the rear view being identical;

FIG. 3 is a top view of the design for a ribbed pipe coupling segment shown in FIG. 1;

FIG. 4 is a bottom view of the design for a ribbed pipe coupling segment shown in FIG. 1; and,

FIG. 5 is a left side view of the design for a ribbed pipe coupling segment shown in FIG. 1, the right side view being identical.

The broken lines in FIGS. 1–5 are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a ribbed pipe coupling segment, as shown and described. 